(p. 85) asadbyabahāra discourteous or rude behaviour; ill-treatment; misuse, abuse. 46)

(p. 974) sadbyabahāra good behaviour; good or courteous treatment; proper use (সময়ের সদ্ব্যবহার). সদ্ব্যবহার করা v. to behave well, to behave oneself; to treat (one) well or courteously; to use well, to make good use of, to turn (something) to good account. 76)